Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
000018excellentexcellent21excellent
230018excellentexcellent31excellent
220019excellentexcellent21excellent
210020excellentexcellent41excellent
200012excellentexcellent11excellent
190010excellentexcellent11excellent
18006excellentexcellent11excellent
17007excellentexcellent11excellent
16005excellentexcellent11excellent
15006excellentexcellent11excellent
140010excellentexcellent11excellent
13006excellentexcellent11excellent
12006excellentexcellent11excellent
110011excellentexcellent21excellent
100015excellentexcellent21excellent
090028goodexcellent51excellent
080037goodexcellent61excellent
070039goodexcellent51excellent
060027goodexcellent41excellent
050025goodexcellent31excellent
040026goodexcellent21excellent
030035goodexcellent31excellent
020017excellentexcellent21excellent
010020excellentexcellent31excellent